Maybe some files are missing. Do what the guy did (if steam version) or try a re-install. Of course you could still wait, maybe someone has another idea.
Personally I never had problems with this, from early Beta on.

I have the same problem but im not running an anti virus. Trying to load a default ranger squad makes it hang up and freeze like your attached picture, creating a custom ranger squad and pressing play doesnt do anything at all...